Chapter 4—Maintenance
Model 330, 340SC, and 370SC Service Manual
4-1
4.0 Maintenance Remove/Replace)
Contents
4.1 Maintenance
Remove/Replace)
....................................................................4-1
4.2 Projector Covers.........................................................................................4-5
4.3 Ventilation Filters.......................................................................................4-5
4.4 Arc Lamp Assembly...................................................................................4-6
Model 330 Ignitor and Arc Lamp Assembly (P/N 900611S) Removal ....4-6
Model 340SC and 370SC Ignitor Assy/Arc Lamp Assy (P/N 104651 or
104120) Removal......................................................................................4-8
Collimating (Condensing) Lens Adjustment.............................................4-10
4.5 System Power Supply.................................................................................4-11
4.6 Electronics Module ....................................................................................4-13
4.7 Cathode Ray Tube (CRT)...........................................................................4-15
Model 330 CRT Removal.........................................................................4-15
Model 340SC and 370SC CRT Removal..................................................4-18
4.8 Video Amplifier Board (VAB)...................................................................4-18
4.9 CRT Yoke ..................................................................................................4-19
4.10 High Voltage Power Supply (HVPS).........................................................4-20
4.11 Card Cage (Printed Circuit Boards) ...........................................................4-21
4.12 Image Light Amplifier Assembly...............................................................4-22
4.13 Projection Lens...........................................................................................4-23
4.14 (SCB) Socket Battery Replacement ...........................................................4-25
4.15 Recommended Spares ................................................................................4-27
4.1 Introduction
This chapter covers procedures on removal, replacement, and adjustment of a
specific assembly or subassembly.
NOTE:
Before performing the front or rear cover or replacing any components or
subassemblies, please review the Safety Section at the front of this manual. These
procedures must be performed by HJT certified maintenance engineers and
technicians only.
When performing removal and replacement procedures, protect yourself and
equipment by following these precautions:
➨
Turn projector power off with the remote.
➨
After the cooling fans have stopped running, turn the projector
off at the circuit breaker and disconnect the power cord.
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